C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
167/216, 260/248
C07D 471/04 (2006.01) A61K 31/53 (2006.01)
Patent
CA 1263958
A B S T R A C T According to the present invention there is provided a new and improved process for the preparation of compounds of the general Formula I Image /I/ and isomers thereof wherein R1 is C1-10 alkyl or phenyl or naphthyl, the two latter groups being optionally substituted by one or more halogen, nitro, amino, hydroxy, C1-4 alkyl and/or C1-4 alkoxy substituent/s/; R2 represents hydrogen, halogen, C1-4 alkyl or phenyl or naphthyl, the two latter groups being optionally substituted by one or more halogen, nitro, amino, hydroxy, C1-4 alkyl and/or C1-4 alkoxy substituent/s/; Z is buta-1,3-dienyl or a group of the formula /a/ Image /a/
463550
Batori Sandor
Benko Pal
Grasser Katalin
Hajos Gyorgy
Kosoczky Ibolya
Batori Sandor
Benko Pal
Egyt Gyogyszervegyeszeti Gyar
Fetherstonhaugh & Co.
Grasser Katalin
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